How element.io Looks on Slack
This page shows how element.io appears when shared on Slack. The current preview headline reads "Element | Secure collaboration and messaging". It pairs with the description "Element is a Matrix-based end-to-end encrypted messenger and secure collaboration app. It’s decentralised for digital..." and a social image. Overall, element.io's setup scores 85/100 against Slack best practices.
Slack preview
Slack
element.io
Element | Secure collaboration and messagingElement is a Matrix-based end-to-end encrypted messenger and secure collaboration app. It’s decentralised for digital sovereign self-hosting, or through a hosting service such as Element Matrix Servic...

Analysis
element.io's social setup currently has 1 warning that affect how it renders on Slack. The most impactful fixes are listed below - they range from missing required tags to image dimensions that will be cropped or rejected by specific platforms.
In particular: description is 297 characters - truncated on most platforms. Each of these has a one-line fix in the recommendations panel above.
What's working well: social share image found; title length is good (44 chars); twitter card type: summary_large_image. 3 of the checks we run pass cleanly.
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